$6x^3+7x^2-1$

$\int\cos\left(3t\right)^4\sin\left(3t\right)dt$

$\log\left(3\right)+\log\left(x-1\right)=\log\left(2\right)+\log\left(x+1\right)$

$x^2y=5$

$\left(2x-3\right).\left(x-4\right)=0$

$\int\left(\frac{e^x}{\ln\left(5\right)}\right)dx$

$\lim_{x\to-\infty}\left(\frac{\left(2e^x-2\right)}{\sin\left(2x\right)}\right)$